[It was] David himself [who] said by [inspiration of] the Holy Spirit [Psa. 110:1], 'The Lord [i.e., God] said to my [i.e., David's] Lord [i.e., Jesus], sit at my right side until I make your enemies the footrest [i.e., in subjection] under your feet.'

So, Joseph also went from the Galilean town of Nazareth to David's town, which was the Judean town of Bethlehem, because he was among the descendants and family of David.

For David himself said in the book of Psalms [Psa. 110:1], 'The Lord [i.e., God] said to my [i.e., David's] Lord [i.e., Jesus], sit at my right side

Now David is not the one who ascended into heaven for he [spoke of Jesus when he] said [Psa. 110:1], 'The Lord [i.e., God] said to my [i.e., David's] Lord [i.e., Jesus], sit at my right side

For a Savior has been born today in David's city [i.e., Bethlehem], who is Christ the Lord [i.e., God's specially chosen one].

God again identified a certain day, [calling it] "Today," in David's [writings], a long time later (just as it was referred to above) [Psa. 95:7-8], "Today, if you hear His [i.e., God's] voice, do not have a stubborn heart."

[Psa. 110:1] 'The Lord [i.e., God] said to my [i.e., David's] Lord [i.e., Jesus], sit at my right side until I put your enemies [in full subjection] beneath your feet.'

Since he was a prophet and knew that God had pledged His word that one of his [i.e., David's] descendants would sit on his throne [as king];

[Now] it was this David's descendant Jesus who was sent to Israel as their Savior, just as God had promised.